code: def test_load_model(self):
      from sahi.models.yolov8 import Yolov8DetectionModel
  
      download_yolov8n_model()
  
      yolov8_detection_model = Yolov8DetectionModel(
          model_path=Yolov8TestConstants.YOLOV8N_MODEL_PATH,
          confidence_threshold=CONFIDENCE_THRESHOLD,
          device=MODEL_DEVICE,
          category_remapping=None,
          load_at_init=True,
      )
  
      self.assertNotEqual(yolov8_detection_model.model, None)
  
file_path: sahi/tests/test_yolov8model.py
imports: import unittest
  import numpy
  from sahi.utils.cv import read_image
  from sahi.utils.yolov8 import Yolov8TestConstants, download_yolov8n_model, download_yolov8s_model
label_desc: Use image node_id 1 for calling the TestYolov8DetectionModel obj's underlying member method code with example usage: obj.test_load_model() without return types